64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
package api
|
|
|
|
import (
|
|
"encoding/json"
|
|
"net/http"
|
|
)
|
|
|
|
// ResponseData defines format for response parameters to return
|
|
type ResponseData map[string]interface{}
|
|
|
|
// Response represents an API response to be sent
|
|
type Response struct {
|
|
Data ResponseData
|
|
Status int
|
|
Headers http.Header
|
|
err Err
|
|
}
|
|
|
|
// EmptyResponse creates an empty response.
|
|
func EmptyResponse() *Response {
|
|
return &Response{
|
|
Status: http.StatusOK,
|
|
Data: make(ResponseData),
|
|
err: ErrFailure,
|
|
Headers: make(http.Header),
|
|
}
|
|
}
|
|
|
|
// WithError sets the error
|
|
func (res *Response) WithError(err Err) *Response {
|
|
res.err = err
|
|
return res
|
|
}
|
|
|
|
func (res *Response) Error() string {
|
|
return res.err.Error()
|
|
}
|
|
|
|
// SetData adds/overrides a new response field
|
|
func (res *Response) SetData(name string, value interface{}) {
|
|
res.Data[name] = value
|
|
}
|
|
|
|
// MarshalJSON implements the 'json.Marshaler' interface and is used
|
|
// to generate the JSON representation of the response
|
|
func (res *Response) MarshalJSON() ([]byte, error) {
|
|
fmt := make(map[string]interface{})
|
|
for k, v := range res.Data {
|
|
fmt[k] = v
|
|
}
|
|
fmt["error"] = res.err
|
|
return json.Marshal(fmt)
|
|
}
|
|
|
|
func (res *Response) ServeHTTP(w http.ResponseWriter, r *http.Request) error {
|
|
w.WriteHeader(res.err.Status)
|
|
encoded, err := json.Marshal(res)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
w.Write(encoded)
|
|
return nil
|
|
}
|